I was wondering if to much oil on chain would cause a failure like I had yesterday that resulted in me breaking my scapula and needing surgery to fix it (out for 4 months!). I installed the KMC SL 1/8 chain the day before and forgot to wipe off the excess oil. When I took it for a ride yesterday, I noticed when I accelerated the chain felt like it was skipping/draggin.
I went to pass a roadie and stood up in my drops, heard a pop and ate pavement; no helmet and luckily it was my shoulder that was smashed (helmet wearer from now on). Bike flew into the woods, and upon inspection just 2 scratches no dents etc, and the chain was still on the cogs; nothing looks like it would cause such a critical failure. Today I'm looking at the chain and when I touched it the cogs and chain are soaked in oil. Now would this over oiling cause this to happen? Thanks in advance, and here are some pics of the break.